Paper supporting and feeding mechanism for type-writing machines.



- O.- 0. MARTIN.

PAPER SUPPORTING AND FEEDING MECHANISM FOR TYPE WRITING MACHINES.

APPLICATION FILED FEB 24. 1910.

1,159 Patenteei NOV 9, 1915.

6 SHEETS-SHEEI I.

PVITNESSES 0. O. MARTIN.

PAPER SUPPORTING'AND FEEDING MECHANISM FOR TYPE WRITlNG MACHINES.APPLICATION FILED FEB.24.1910.

6 SHEETS-SHEET 2.

INVENTOR,

0-. 0. MARTIN. PAPER SUPPORTING AND FEEDING MECHANISM FOR TYPE WRITINGMACHINES.

I APPLICATION FILED FEB, 24. I910.

1,1 59,404., Patented Nov. 9, 1915.

6 SHEETS-SHEET 3.

[NYE/V7018,

0. 0. MARTIN. PAPER SUPPORTING AND FEEQING MECHANISM FOR TYPE WRITINGMACHINES.

APPLICATION FILED FEB 24. I910.

Patented Nov. 9, 1915.

6 SHEETS-SHEET 4- A llamzy I 0. 0. MARTIN.

PAPER SUPPORTING AND FEEDING MECHANISM FOR TYPE WRITING MACHINES.

APPLICATION FILED FEB-24.19). 1,159,40%. Patented Nov. 9, 1915.

6 SHEETS-SHEET 5.

O. O. MARTIN. PAPER SUPPORTING AND FEEDING MECHANISM FOR TYPE WRITINGMACHINES.

APPLICATION FILED FEB. 24. I910.

Patented Nov. 9, 1915..

www- I,

6 SHEETS-SHEET 6.

l/VVE/VTOR,

Nb mm @w OLAF 0. 'IVIARTIN, F PORTLAND, OREGON,

ASSIGNGR T0 ELLIOTT-FISH 915' HARRISBURG, rnrmsrnvnn'inn COHPGRATION OFDELAWARE.

PAPER, SUPPORTING All FEEDING MECHANISM FOR 'IYEE-WfiITING MACHINESSpecification of Letters it"atent.

T 0 all whom 2'25 may concern Be it known that I, @LAF U. liAIt'llN, acitizen of the United States of America. residing at Portland, in thecounty of ll'iultnd inah and State of ()regan, have invented certain newand useful Improvements in'l 'apcr Supporting and Feeding Mechanism forTypelvriting Machines, of'which the follpwing is a specification.

This invention relates to improvements in typewriting machines, and moreparticularly to a paper supporting and feeding mechanism adapted for usein connection with a downwardly acting printing mechanism.v v

The object of the invention, stated generally, is to provide adownwardly printing typewriter with a supporting structure in cluding aplaten, and means for supporting. guiding and feeding a continuous webof paper which is led around the platen into position to be printed uponto the end that the paper web or strip may be continuously printed uponwithout shifting the machine longitudinally of the paper for linespacing as is usually necessary in this form of type writer.

[A further object of the invention is to provide retaining means forsecuring the machine in position for printing and operative to permitsaid machine to be moved back on the supporting structure to a positionin rear of the platen when access to the latter is desired. Furtherobjects subordinate to those stated willjappear as the succeedingdescrip tion of the illustrated embodiment of the invention isdeveloped.

In the accompanying drawings-Figure l is a. perspective View of anElliott-Fisher writing-adding machine equipped. in accordance with myinvention. Fig. 2 is a similar View of the machine supporting platen-frame. Fig. 3 is a plan view of the subjectmatter of Fig. 2. Fig. i adetail sectional View on the line -l-'l of Fig. a longitudinal sectionalview through the platen frame and parts carried thereby. Fig. 6 is aperspective view of the platen frame and associated parts inverted, thepaper roll being shown l8ll1OV l, l)llt tl 1 normal position thereofheing indicated in, dotted lines. Fig. 7 is a detiiil sectioi'ial Viewshowing one of the machine catches and associated parts. Fig. 8 is anenlarged secplaten frame and associated parts, the active position ofthe paper .feeding mechanism belng shown in full lines and the inactiveposition of such mechanism being indicated in dotted lines. Fig. 9 "asection approximately on the line.9-'9 of Fig. 3, the line spacemechanism being shown in different positions in full and dotted lines.Fig. 10 is a sectional view approximately on the line 10-l0 of Fig. 3with the line spacing mechanism indicated in difierent positions and thevariable stop of said mechanism set in a different position from thatshown in Fig. 9. Fig. 11 is a view similar toFig. 10 but showingstillanother adjustment of the variable stop. Fig. 12 is a detail view of thevariable line space stop and immediately adjacent parts. Fig. 13 is adetail elevation of the mounting for the line space stop *ith partsbroken away to more clearly show the detent for holding the stop in itsadjusted position. Fig. 14 is a detail'perspective view of the linespace lever, and Fig. 15 is a similar-view of the line space pawl.carrier. Each part wherever shownis indicated by its proper referencecharacter.

The Elliott-Fisher writingadding mo.- chine indicated as a whole by 1and shown clearly in Fig. l of the drawings, is a typewriter of thedownwardly printing type well known to commerce. This machine includesa. main machine frame 2, supporting a carriagg- 3 which travels in thedirection of letter spacing under the control of keys l, the depressionof which causes the operation of downwardly acting type arms 5(indicated in Figs. 1 and 5) and also operates escapeinent mechanism,not shown, which permits the carriage to be drawn step by step under theimpulse of spring drums 6 connected to the carriage by tapes 7. Thenumeral keys also reflect the operation of a register or addmechanism 8supported in rear of the carriage 3 by the frame 2. ()rdinarily in thistype of machine the main machine frame 2 is shifted longitudinally ofthe In the ary ER COMPANY,

Patented Nov. 19115. A

tlonal viewof the front end portion of the upon what may betermed' aplaten frame 9, the upper edges of the side members 10 and 11 of whichconstitute tracks or guides upon which travel rollers 12 carried by theframe 2 in front and rear, see Figs. 1 and 5.

In Fig. 1 the machine is shown moved back to a position in rear of itsnormal or operative position, but in Fig. 5 the machine is shown in itsforward or printing position where it is secured 'to the platen frame orsupporting structure 9 by movable catches 13 pivoted to the frame 2 andadapted to'eng'age notches 14 in the side members 10 and 11 of the frame9, see- Figs. 1 and 7. The catches 13are urged toward their en-. gagingpositions by springs 15 and include finger pieces 16 to facilitate themovement of the catches against the resistance of their 11, the frame 9includes a number of transsprings. \Vhen it is desired to push themachine back from its printing position the operator merely grasps theframe 2 adjacent to its opposite ends and this act elevates the 'fingerpieces 16 and thus releases the catches to permit the machine to bemoved back as desired. When the machine is again drawn forward thecatches snap in place and the frame 2 is securely held in properrelation to the printing point of the platen during the printingoperation.

In addition to the side members 10 and verse members which serve tostiffen the supporting structure of the machine, for instance front andrear end bars 17 and 18 of cylindrical cross section, and a flat inte'rmediate bar 19, as shown in Fig. 5. These transverse bars 17, 18 and 19are'secured by screws, as indicated in Fig. 6,, and in addition theretoare other transverse members to which reference will be made hereafter.The bar 17 is located at the lower front cornor of the frame and in rearthereof is mounted a transversely disposed cylindrical platen 20 ofsuitable material provided with a spindle 21 having hearings in the sidemembers 10 and 11 of the frameand provided with terminal thumb wheels 22to facilitate the free rotation of the platen in a manner wellunderstood in the art. 1

Between one end of the platen and the frame bar 11 a ratchet wheelordinarily lmown as the line space ratchet 23 is fixed .to thespindle'21 and is engaged by 'a detent 24 of usual construction, toprevent accidental movement of the platen during the printing operatiom'Associated with the platen are front and rear feed rolls 25 and 26, theformer being mounted in the upper ends of roll frames 27 mounted to'swing from a transverse rock. shaft 28 and urged ftowardthe platen bysprings 29 secured to the: transverse frame bar 17. The roll framesswing independently of each other. being: urged 'by their individualsprings to present the rolls25 against the paper web 7 are urged towardthe platen by springs 32' bearing upon the roll frames and secured tothe under side of the intermediate frame bar 19. The front and rearrolls 25 and 26 are located at diametrically opposite points of theplaten, the rolls 25 being located com paratively adjacent to but infront of the line of writing. In order to move the feed rolls away fromthe platen to inoperative positions (as indicated in dotted lines inFig. 8) to facilitate the manipulation of the work sheet, I provide whatmay be termed a release lever 33 mounted to swing from the bar 17adjacent to the long under side of the frame and having a short end 31provided with a concavity 35 designed to coact with an arm 36 dependingfrom the shaft 28, the arm being connected by means of a link 37 to asimilar arm 38 depending from the shaft 31.

Extended from each of the shafts 28 and 31 are radially disposed pins 39disposed to engage cross-bars 40 of the frames 27 and 30. Normally thefeed rolls and their a's-. sociated partsoccupy the positions shown infull lines in Fig. 8. When, however, it is desired to throw off the feedrolls the lever 33 is depressed to the dotted position in Fig. 8, theshort end 3 1'of said lever engaging and swinging the arm 36. This inturn rocks the connected shafts 28 and 31 and causes the pins 39extended therefrom to engage the bars 10 of the roll frames and urgesaid frames away from the platen against the resistance of the springs29 and 32, the relation of the axes of movement of the lever 33, the arm36 and the coacting portions of the lever and arm being such thattheparts will be retained in their in-.

operative positions until the lever 33 is again thrown up or returned tonormal position.

The paper web 09 is led to the platen 20 from a paper roll 41 wound uponthe spindle -12 supported by open bearings 43 in bearing plates 44secured to the inner faces of the frame members 10 and 11 at pointsadjacent to the rear end of the frame, see Figs. 5 and v 6. From theunder side of the roll 11 the web :0 is led over a horizontal apron 45of sheet'metal or other su1table material secured at its rear edge to atransverse bar 46 and extended over the transverse frame bar 19. Inadvance of the bar 19 the apron 4:5 is led in a downwarddirection to apoint adjacent to the periphery of the platen around which it is carriedto a point ad-;

ran

meanneplaten being secured in place by tabs 48' screwed to the members10 and 11. In

I order to facilitate the feeding of the front end of the web to theplaten it is desirable to provide a paper guide 49, preferably of sheetmetal, extending rearwardly from the platen and conforming to thatportion of the apron 45 which extends from the bar 19 guide 49, andtable 52 may be to the vicinity of'the rear feed rolls. 'The rear end oftheguide 4:9 is bent upwardly, as indicated at 50, to provide a flaredend to the guideway 51 defined between the guide 49 and the apron 45.Thus when the rear end of the paper web is drawn over the apron 45 fromthe roll it is readily passed into the guideway 51 and led thereby tothe platen around the front side of which it is guided by thesemicylindrical front portion of the apron 4C5.

For. the purpose of supporting and guid ing the advanced end or writtenportion of the web, a sheet metal paper table 52 is secured .above theguide 49 and is extended to the periphery of the platen in rear of theprinting point. see Fig. 8. The apron 45, secured in any suitablemanner, one convenient mode being that shown in detail in Fig. 4 whereina screw 53 is passed through the table, guide I and apron and into theframe member 19, a spacing member 5a being interposed between the guideand apron and retained by the screw.

The paper roll 41 is protected by a sheet metal roll cover 55 hingedupon the trans-- verse frame bar 18, as shown in Fig. 5, and havingfingers 56 which rest upon the rear edge of the apron 45. The fingers 56not only serve to hold the front edge of the roll cover in position, butconstitute lateral guides for the web which passes upwardly from theroll between the front edge of the cover 55 and the-rear edge of theapron 4:5.

4 If desired, additional lateral guides for the web may be provided inthe form of flanges 57 extended along the opposite sides of the apron45. It will be noted that the cover 55 constitutes a rearward extensionof the apron 4-5 so that as the advanced end of the paper web movesrearwardly from the paper .table 52 it will be supported by the apronand guided over the paper roll by the cover 55 until it drops from therear end of the roll cover and is received within a suitable receptaclelocated below the rear end of the platen frame.

Disposed along the platen 20 adjacent to. I

4 At points oppobut in rear of the line of writing or printmg point is ascale bar 58 carried by sw1ngmg arms 59 pivotally connected at-the1rrear ends to the frame members 10 and 11, as

thrown'back from the platen to facilitate the initial threading of theweb.

The line spacing mechanism by means of V which the platen is rotatedstepby step in a mannerwell understood in the art includes a line spacinglever 62 mounted to swing from the shaft 28 and urged in one directionby a spring 63. At the front end of the'lever is formed a finger piece64 and at its rear end is a laterally disposed pin 65 received within aslot 66 in a pawl carrier 67. The pawl carrier is in the formof an armhaving a line spacing pawl 68 at its front end and loosely swung at itsrear end from ;the platen spindle. 21, thecarrier 67 being provided witha. slot 69 for the reception of the spindle. At apoiht below the slot69the carrier 67 is secured to the front end of a retracting spring 70housed in a recess 71 in the adjacent side member of the frame andhaving its rear end secured to a fixed part as for instance a screw '72.

The joint actions of the springs 63 and 70 normally retain the linespace lever 62 and the pawl carrier 67 in the position shown in Fig. 9,it being noted that-the-pawl 68 whilecontiguous to the teeth of theratchet 23 is normally entirely disengaged from. said ratchet to permitvtheplaten to be freely turned by the manipulation of the thumb wheels22. When it is desired to linespace the writing on the web the operatordepresses the front end of'the lever 62 toward the dotted positionindicated in- Fig. 9. This movement of the lever causes the pin 65 todescribe an are which. causes it to elevate the front end of the pawlcarrier 67 and at the same time recede sufiiciently to enable the spring70.130 draw the beak of the pawl 68 into engagement. with a tooth of theratchet 23'. Continued movement of the lever 62 will cause the pin 65toelevate the pawl carrier 67 and thus advance the ratchet and rotate theplaten, the arcuate path traversed by the pawl 68 as it moves with theperiphery of the wheel 23 being accommodated by the slot 69 in the pawlcarrier 67. The upward movement of the pawl carrier 67 and consequentlythe degree of rotary b, 0, disposed in graduits , greater movement ofthe carrier 67 limited ated' arrangement. In order to provide for theshifting of the stop member 73 in order to bring any desired stop intoposition to coact with the pawl carrier 67, said memher 7 3 is movablewith a' slide 74 preferably integral with. the stop member and movablein a guideway 75 formed in the adjacent side member of the frame. At itsfront end the slide 74 is provided with a finger piece 76 by means ofwhichit may be readily manipulated and its retention in each of itsseveral positions is effected by means of a spring-urged detent 7 7engaging notches 78 in the bottom wall of the guideway 75. A

headed screw 7 9 screwed into the side of the 7 frame serves to preventlateral displacementof the slide 74. 1 1

By reference to Fig. 9 it will be seen that when narrow spacing isdesired the variable stop 73 is moved to its innermost position so as toarrest the pawl carrier 67 after comparatively slight rotary movement ofthe platen. If intermediate spacing is desired the member 73 is drawnout, as shown in Fig. 10, to permit the pawl carrier to have furthermovement limited by the engagement' thereof with the intermediate stopface I) and when wide spacing is desired the stop member is drawn out tothe position indicated in Fig, 11 so as to permit a still by theengagement thereof with the third and last stop face 0. It is obvious,however, that if a greater variety of spacing is required, the number ofline space stops or stop faces may be increased.

It is thought that from the foregoing, the described construction andarrangement of parts will be readily comprehended, but

while the present embodiment of the invention is believed to bepreferable, I expressly reserve the right to effect such variations ofthe illustrated structure as may come fairly within the scope of theprayed.

lVhat I claim is l. The combination with a supporting frame and aprinting machine, movably mounted thereon, of a platen mounted in thesupporting frame adjacent to its front protection end, means formounting a paper roll in rear of said platen, an apron mounted in thesupporting frame and arranged to lead a paper web from the roll to theplaten, a paper guide disposed substantially parallel to the apron toform a guideway for the web, and a horizontal paper support 10- cated inrear of the platen to support that portion of the web extendedrearwardly from said member.

. 2. The combination with a supporting frame and a printing machinemovable thereon, of a rotary platen mounted in the supporting frameadjacent to its front end,

feed rolls and line spacing mechanism. associated with said platen, anapron located in rear of the platen and having a guideway at its frontend for a paper web, and a'horizontal paper support located in rear ofthe i. The combination with a supportingframe and a printing machinemovable thereon, of a rotary platen mounted in the supporting frameadjacent to its front end,

feed rolls and line spacing mechanism asso:

ciated with said platen, means for mounting a papcr'roll in thesupporting frame in rear of the rotary member, an apron extended betweenthe paper roll and the platen and provided with. longitudinally disposedlateral paper guides and also having a guideway at its front endarranged to lead the web around the under side of the platen, and ahorizontal paper support located above the apron and in rear of theplaten,

5. In a mechanism of the character described, the: combination with aframe, of paper feeding mechanism including a rotary platen mounted inthe frame,two series of feed rolls coacting with said platen, a-

pair of rock shafts, a series of rollframes mounted to swing from eachshaft, springs for urging the roll frames toward the platen, projectionsextended from each rock shaft and disposed to engage and swing the rollframes'when the shafts are rocked, an arm extended from each shaft, alink connecting the arms, and a lever provided with a notched endcoacting with one of said arms to rock the shafts for the purpose ofwithdrawing the feed rolls from the platen and to retain said shafts inthe positions to which they are rocked.

6; The combination with a stationary frame, of a rotary platen mountedtherein, means for mounting a paper feed roll in rear of the platen,paper guiding means intermediate of the platen and roll mounting, meansfor supporting that portion of the paper which has been extended back,from the platen, and a printing machine normally disposed over theplaten but movable on thestationary frame to a position away from theplaten.

7. In a mechanism of the character described. the combination with aframe, of paper feeding mechanism including a platen mounted in theframe, feed rolls coacting with the platen, a rock shaft, a series, of

urged. r011 frames mounted to swing I said shaft springs urging the rollfra 'nes toward the platen, projections extended from the rock shaft toengage and swing "the roll frames, an arm extended from the shaft, and alever having a notched end coasting with said mm 130 rock the shaft forthe purpose of withdrewing the feed. rolls from the platen and to retainsaid shaft in the position to Which it is rocked.

In testimony whereof I afiix my signature in presenceof two Witnesses.

OLAF O. MARTIN. Witnesses I J. GEISLER,

CECIL LONG,

